Article
Chemistry, Physical
Xiaoxiao Guo, Shujian Cheng, Bo Yan, Yile Li, Ruoyu Huang, Junxiao Li, Weiwei Cai, Yufeng Zhang, Yinghui Zhou, Xue-ao Zhang
Summary: Graphene aerogel shows low elastic modulus and high thermal conductivity. Annealing at high temperature improves its crystallinity and thermal conductivity. Under pressure, its thermal conductivity is greatly enhanced and is 30 times higher than other graphene-based thermal interface materials.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Materials Science, Composites
Zuomin Lei, Keyu Zhu, Fanglin Lv, Mengliang Hu, Xuebin Liu, Jianhong Wei, Shu-Shen Lyu, Dong-chuan Mo, Yougen Hu
Summary: Efficient 3D-oriented graphite/silicone EMI shielding composite slices with high through-plane thermal conductivity were prepared by constructing 3D-oriented graphite skeletons followed by incorporation of silicone. The composite slices showed significant enhancements of EMI shielding effectiveness and thermal conductivity, indicating great potential for advanced EMI shielding and thermal management applications.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Energy & Fuels
Hongzhi Cui, Pizhuang Wang, Haibin Yang, Yuan Shi
Summary: A novel expanded graphite-based aerogel loaded with polyethylene glycol (PEG) was fabricated, showing significantly improved thermal conductivity and solar-to-thermal energy charging efficiency. The composite material exhibited a 1290% higher thermal conductivity and a substantial increase in solar-to-thermal energy charging efficiency compared to pure PEG.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Polymer Science
Shuai Liu, Hong Wu, Shaoyun Guo, Jianhui Qiu
Summary: The high orientation of thermally conductive fillers has been proven to enhance the thermal conductivity of polymer matrix composites. A multilayered ribbon network was constructed to confine the stack space of boron nitride platelets, leading to an increase in local concentration of BN and the formation of ordered stacking of oriented BN in a confined 2D space. This work offers a new method to achieve both high thermal conductivity and good mechanical properties in polymer-matrix composites.
Article
Chemistry, Multidisciplinary
Fatema Tarannum, Swapneel S. Danayat, Avinash Nayal, Rajmohan Muthaiah, Roshan Sameer Annam, Jivtesh Garg
Summary: In this work, we demonstrate that the addition of expanded graphite (EG) to nanocomposites prepared by solvent casting technique can significantly enhance the thermal conductivity. The extraordinary enhancement is attributed to the formation of a continuous network of graphene sheets over long-length scales, resulting in low thermal contact resistance at bends/turns. The solvent casting technique preserves the porous structure of expanded graphite, creating a highly thermally conductive interpenetrating network of graphene and polymer. FE-ESEM is used to provide a detailed understanding of the structure of the graphene-polymer in the expanded graphite composite. These findings open up novel pathways for achieving high thermal conductivity polymer composites.
Article
Chemistry, Multidisciplinary
Qun Wei, Lei Xu, Zhimeng Tang, Zhangbiao Xu, Cheng Xie, Lirong Guo, Wei Li
Summary: This article proposes a facile preparation method with characteristics of energy-saving, efficient and environmentally friendly. Graphite Intercalation Compounds (GICs) were synthesized using flake graphite (FG), H2SO4, and K2S2O8 as oxidative intercalations. EG (Expanded Graphite) was prepared from obtained GICs by microwave irradiation. The prepared EG demonstrated a high graphitization degree, less structural damage, and good industrial application prospects. The evaluation is: 8 points.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Peng Lv, Haipeng Miao, Chenglong Ji, Wei Wei
Summary: Highly compressible graphene aerogels (HCGAs) were prepared with closely packed cell walls and regularly cellular structure. Significantly increased thermal conductivity along both in-plane and through-plane directions can be obtained by directly mechanical compression of the aerogels. The HCGAs outperform other carbon-based TIMs in thermal transport performances.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Materials Science, Composites
Yaqi Yang, Ruize Bi, Wei Ren, Youyi Sun, Honghong Zhao, Hongji Duan
Summary: Inspired by the matching phonon spectra between rGO and hBN, this study constructs an rGO-hBN network for EMI shielding and through-plane thermal conduction. The prefabricated 3D rGO aerogel serves as an electrically conductive framework for EMI shielding, and hBN in rGO pores establishes a confined through-plane thermal conduction network. The composites exhibit excellent EMI shielding effectiveness and good through-plane thermal conductivity, making them potential candidates for next-generation flexible packaging materials.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Review
Materials Science, Multidisciplinary
Lu Zhao, Jiang Tang, Min Zhou, Ke Shen
Summary: This article reviews the research progress on the thermal properties of graphite, including the thermal expansion coefficient and thermal conductivity. The study of graphite's thermal properties is of great importance for heat dissipation in electronic devices and nuclear engineering.
NEW CARBON MATERIALS
(2022)
Article
Thermodynamics
X. K. Yu, Y. B. Tao
Summary: In this study, a paraffin/expanded graphite composite phase change material was prepared and characterized. The results showed that increasing the content and block density of expanded graphite can enhance the thermal conductivity and cycle stability of the composite material. The formation of expanded graphite lamella structure improved the directional thermal conductivity. Experimental results also revealed the effects of expanded graphite content, block density, and lamellar direction on temperature control performance.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Energy & Fuels
Tao Wang, Yang Liu, Rui Meng, Mingfu Zhang
Summary: Nickel hydroxide and nickel oxide are key materials in batteries, mainly used as positive electrode materials in lithium-ion batteries and nickel-metal hydride batteries.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Materials Science, Composites
Xinfeng Wu, Bo Tang, Jin Chen, Liming Shan, Yuan Gao, Ke Yang, Ying Wang, Kai Sun, Runhua Fan, Jinhong Yu
Summary: This paper explores the use of all-carbon networks to enhance the thermal conductivity, heat stability, and electrical conductivity of epoxy composites for thermal management in electronic devices and aerospace applications.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Thermodynamics
Si Wu, Qin-Yi Li, Tatsuya Ikuta, Kazuhiko Morishita, Koji Takahashi, Ruzhu Wang, Tingxian Li
Summary: This study measured the thermal conductivity of an individual expanded graphite ribbon (EGR) using a variable-length T-type method and obtained data on both the EGR and the thermal contact resistance between the sample and the probe. The EGR demonstrated a high thermal conductivity at room temperature and showed a decrease as the temperature rose, making it a promising material for thermally conductive composites.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Engineering, Environmental
Baojie Wei, Liang Zhang, Shuangqiao Yang
Summary: A method was developed to fabricate enhanced 3D expanded graphite (EG) network by pre-melt blending of EG with stearic acid and polyethylene wax, followed by powder mixing and thermal molding with linear low-density polyethylene (LLDPE) particles. The introduction of small molecular compounds significantly reduced micro gaps in EG, leading to increased thermal conductivity to ultrahigh levels.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Thermodynamics
Kai Wang, Ting Yan, Y. M. Zhao, G. D. Li, W. G. Pan
Summary: A novel palmitic acid composite phase change material with excellent thermal properties and stability was developed, showing great potential in heat storage applications.
